An instance named web-106rqyp is running a web server. Try it from CloudShell:
sh
IP=$(aws ec2 describe-instances --filters Name=tag:Name,Values=web-106rqyp --query "Reservations[0].Instances[0].PublicIpAddress" --output text)
curl -s -m 3 http://$IP/ ; echo "exit $?"
aws ec2 describe-security-groups --group-names default --query "SecurityGroups[0].IpPermissions"Create web-sg-106rqyp with one inbound rule, port 80 from anywhere, attach it to the instance in place of the default group, and curl again. Port 22 stays closed; you will not need it.